So I go back to… why has it been changed? I have read that hospitals use plasma readings. And to make sure we are all going by the same system, we have been switched over to plasma as well. But the only reading I am ever given at hospital is my HAb1. There is no conceivable way that I am going to be muddled by a plasma reading from hospital and a whole blood reading I have received myself. So who is being helped here? Certainly not me.
Oh, and what is more, they read the glucose in whole blood and then CONVERT it to what it (probably) would be if the meter had been given a plasma sample!